package socket;

import socket.DruidDataSource;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/*
 使用当前类专门维护数据库链接
 */
public class DBUtil {
    private static DruidDataSource ds;

    static {
//        try {
//            Class.forName("com.mysql.cj.jdbc.Driver");
//        } catch (ClassNotFoundException e) {
//            e.printStackTrace();
//        }
        ds = new DruidDataSource();
        ds.setUrl("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true");
        ds.setUsername("root");
        ds.setPassword("root");
        ds.setMaxActive(20);//最大连接数
        ds.setInitialSize(5);//初始连接数
    }

    public static Connection getConnection() throws SQLException {
        return DriverManager.getConnection(
                //jdbc:mysql://数据库地址:端口/数据库名?一堆固定参数
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
    }
}
